Gaya APA

Widjaja, G. (2011). Complete English grammar:part I and II (26 chapters) and (35 chapters) with explanation (Cet. 10.). Yogyakarta: Bhuana Ilmu Populer.

Gaya MLA

Widjaja, Grace. "Complete English grammar:part I and II (26 chapters) and (35 chapters) with explanation". Cet. 10. Yogyakarta: Bhuana Ilmu Populer, 2011. Text.